How do i solve this type of punnet square?

so the father, since he is black, has 2 recessive alleles, therefore his would be b b, and since some of the children were black and sime were white, then the mother has one dominant and one recessive, B b.

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

the answer is b. glad to .